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Looking at metal for an open beam, wood decking, .5" fall roof. Beams are 4x12, decking is 2x6. Insulation is foam on top of decking under roofing material. Have had moderate success with tar & gravel, good success with membrane. High snow load, short summers, heavy summer rains.
I know your contractors are all experts, but I'd like to go in with some solid information.
Thanks
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I'd already figured it would need to be field seamed. I notice that standing seams come in different heights, what is the basis for selection? Is soldering advantageous? Given the range of metals, which seem to offer the longest life? Finally, what considerations need be given to expansion? Winter temperatures can easily get to -20 f. and summer insolation can bring the ambient to 90 degrees and surface temps well over 100 f.
Thanks
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Virtually no roofs are soldered today.
The longer the rafter lengths, the higher the seam is a good rule of thumb. With longer rafter lengths, each pan will carry more water so higher seams are helpful.
These systems are all designed to handle the expansion and contraction that is inherent to them.
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My thanks to both posters.
I guess my only unresolved question is in the type of metal and coatings (if any). Since the structure is in a very rural area, labor and travel costs eclipse materials. Longevity and ease of maintenance are my primary concern.
Thanks
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Really, coatings and metals are a matter of personal coice but do realize there are varying levels of quality.
I personally would choose a Kynar/Hylar coating and either G90 galvanized or AZ50 or 55 galvalume ... or aluminum.
8/25/2007
Isaiah Industries, Inc.
8/26/2007
8/26/2007
Isaiah Industries, Inc.
8/31/2007
8/31/2007
8/31/2007
Isaiah Industries, Inc.
8/31/2007